Printing-press.



Patented Mar. 4, |902.

2 Sheets-Sheet I.

A.E. DWELL.

PRINTING PRESS.

(Application led Sept. 20, 1901.)

(N0 Model.)

W l TNESSES- Patented Mar. 4, i902.

A. VE. nowELL. PRINTING PRESS.

(Application led Sept. 20, 1901.)

(No Model.)

WLM/15555;

Wfl

UNITED STATES PATENT OFFICE.

ARTHUR E. DOWELL, OF `l/VASHINGTON,A DISTRICT OF COLUMBIA, AS- SIGNOR TO THE DUPLEX PRINTING PRESS COMPANY, OF BATTLE- CREEK, MICHIGAN.

PRINTING-PRESS.

srncrrrcafrron 'forming part of Letters raient Ne. 694,846, dated March 4, 1902.

Application iiled SeptemlicrZO, 1901. Serial No.' 75,842. (N0 model.)

looping mechanism of web-handling machin.

ery, and is especially designed for use in connection with machines wherein a portion of an otherwise continuously-moving web isintermittently stopped, such stoppageof 'the web being eected by movable looping-rollers; and the object of the present invention is to so control or regulate the movement of the looping-rollers by, from, or with the movement ofthe web feeding, forward ing, or delivering rolls that the web will be looped by the rollers exactly in a predetermined ratio proportionate to the speed of the feeding-rolls, and hence by varying the speed of the feedrolls the action of the'loopingrollers will be correspondinglyand proportionately varied.

The invention is particularly applicable to what are known as duplex dat type-bed web-perfecting presses, and in the accompanying drawings I have illustrated the invention as adapted for 'and applied tos'uch a press; but the invention is applicable to other Web-printing presses or web-operating mechanism; and it consists, essentially, in the combinations and constructions of parts summarized in the claims.

Referring to the accompanying drawings, Figure l is a detail vertical sectional elevation of the web feeding, looping, delivering, and cutting mechanism of a duplex web-perfecting press equipped with my invention. Fig. 2 is a detail section on line 2 2, Fig. 4, showing the device for operating the loopingrollers from the shaft of one of the deliveryrolls. Figs. 3 and 4 are detail sectional views, respectively, taken on line 3 3 and line 4 4, Fig. 1. Fig. 5 is a detail side elevation of the press, showing the changeable-speed drive mechanism of the rollsgiand Figs. 6 and 7 are detail side and plan viewsof a modification of thc looping-roller-operating device. Y

K K K2 designate the web infeed-rolis, and O O' the outfeed or delivery rolls, driven at an uniform relative'perpheralspeed bya connecting train of gears o o, as indicated in the drawings. ZZ designate lower and upper weblooping rollers mounted in a vertically-recip-- rocating frame L, and M M designate webguiding rollers, C C' cutting-cylinders, and W the web. All said parts are arranged and operated substantially as described in Coxs patent, No. 478,503, of July 5, 1892.

The feed-rolls K may be driven by a train ofgears k le if? from a gear logon the main shaft of the machine. To enable variable speeds to be imparted to the feed-rolls, the gears 7a la may be made removable and interchangeable With various-sized gears, and the gear 7ef may be journaled upon a swinging lever P, pivoted on the shaft of gear k2 and adjustable toward or from the gear k by means of a screw P', as indicated in Fig. 5, or any other convenient orpreferred means may be used by which different speeds may be imparted to the feed-rolls. ders C C may be driven at an uniform speed by the train ofV gears o2 o3 o4 o5 from the same or a like gear k3 on the main shaft, as indicated in Fig. l. f

As shown in Figs-l to 4, the frame L has a rack extension L at its upper end, which meshes with a small gear R, which may be mounted on a shaft of its own and driven from `the feed or delivery rolls, but can be, as shown, very conveniently mounted upon Aand loosely journaled on the shaft O4 of the delivery-roll O. Said gear R, as shown, is halt` the diameter of the roll O, so that when The cutting-cylinit is actuated it will move the frame L at eX- actl y half the speed at which the periphery of the roll is moving. The gear R should be locked to the shaft only during the time when it is desired to cause the rollers Z Z to rise and intermittently stop the web, and this may be eected by any suitable device. For example, the gear R may be provided with a clutchface R' on one end opposite aclutch-block r, splined on the shaft of roll O and moved toward or from the gear R by means of a bifurcated lever S, pivoted on a bracket S and having a rearwardly-projecting arm S2, carrying a friction-roller s, which traverses the IOS groove s2 of a drunken cam s', `which should be driven independently ofthe delivery-rolls. As shown, cam s is fixed on the shaft of the cutting-cylinder C. The cam s is shown as a single-throw cam, and by this construction the gear R will be locked to the feed-roll shaft during everyother half-revolution of the cam s or cutting-cylinder C and unlocked therefrom during the alternate half-revolutions regardless of the speed of the feed and delivery rolls. Obviously the times and relative extent of time during which gear R is locked to the delivery-roll shaft or unlocked therefrom can be varied by properly designing the cam s; but for ease of explanation it may be assumed, for example, that in the operation of the press, as shown, the part of the web in thevprinting mechanisms (which are beyond the rollers M M', as shown in the Cox patent) is stopped during the time of a halfrevolution of the cam s (or cutting-cylinders) and then fed forward thereafter about as explained in said patent. Withthis assumption it willbe readily understood that if the feeding and delivery rolls are turning through fortyinches of web during each rotation of the cam s orthe cutting-cylinders then the looping-rollers .should and will be raised ten inches by gear Randrack L during the time gear R islocked to the shaft of roll O, during which time the printing is effected. Consequently the lower looping-roller Zwould take up the twenty inches of web fedin by the feed-rolls, and the upper looping-roller Z wou-ld give out a like amount of web as demandedvby the delivery-rolls. lf, however, itis desired lto print sheets of another length, the speed of the feed and delivery rolls can be altered .by substituting another gear 7c (either larger or smaller, as required) for the gear Zrrused when forty inches of web are fed, and supposing that the length of sheet to be printed was to be twenty inches instead of forty a smaller gear Zt (of the proper diameter) would be substituted; but 'the cam s must still be driven at the same speed, and in the constructionshown the cuttingcylinders C 4O would, also be always uniformly driven. V-Bythus vchanging gear 7c the feed and delivery rolls would be slowed down s0 that` they would only feed through twenty inches of web for each rotationof cam s and the-,cuttingcylinders, and -in sor-doing they wouldrotateat just half the peripheral speed at which they rotated when feeding forty inches of web, andfconsequently during the time the gear R is locked to the shaft of roll O by the action of cam s the looping-rollers Z Z would beraisedbut tive inches.d Hence-the lower looping-roller Z would just take up the tenj-inchesl of web fed in during the impression ofthe feed-rolls and the upperloopingroller ZT would just give out thelike amount demanded` by the delivery-roll. As the, web is fed freely between the cutting-cylinders and the latter rotate at an uniform speed, they will act to properly sever sheets of different lengths, the length of sheet depending entirely upon the amount of web fed between the cutting-rolls by the delivery-rolls,wl1ether the latter be speeded high or low. Therefore in order to enable the machine to operate uponv or produce dierent lengths of sheets in the web it is only necessary to substitute the proper interchangeable gears Zc k or otherwise properly .vary the peripheral speed of the feed and delivery rolls as desired, so that they will operate to feed only the proper length of web ina given time- 11. e., say one revolution of the cam s. As soon as gear R is released from the shaft O4 the looping-frame L descends, so that the collected loop of web is transferred from the roller Z-to roller Z. The frame may descend by gravity, but is preferably aided in its descent by any suitable or preferred means. As'shown, a springpressed lever T bears upon a frictionroller L2 on the lower end of frame L the spring T being adjusted so as to insure the proper and full descent of the looping-fraine,and thereby cause the looping-roller Z to draw the web from the lower to the upper loop, substantialy as described in said Coxpatent. To prevent Atoo-sudden stoppage or descent'of the loopingrolls Z Z', dash-pot or air-cylinder U may be arranged below the frame L and the piston a thereof attached to the lower end of said frame, as shown.

In the modication shown in Figs. 6 and 7 (which is but one of manyrtha-t will or might occur to a skilled mechanic when the invention is once understood) a frictional gear V is secured to the shaft Olrof roll O, and a friction-bar L3 is attached to the upper end of looping-frame L. At the proper time this friction-bar is held against the gear V by means of a roller lvon the pivoted lever X, which is actuated by a spring X', as shown, and when bar L3 is so pressed against the frictiongear V the looping-frame will beraised. As shown, the bar L3 is released at the proper time-by means of a cam sion the shaft of the lower cutting-cylinder C. In practice the cam might be arranged to hold the bar L3 against the gear V and the spring arranged to release the bar. The practical operation of the parts shown in 'Figs. 6 and 7 is substantially the `same as those previously described.

The invention is of courseadapted to operate one or more vlooping-rollers simultaneouslyand to operate either a web takeup or a web give-up looping-roller.

By the present vinvention the necessity for nicely adjusted and calculated cams for 0peratiug thelooping-rollers is dispensed with. The same mechanism can be used to operate the looping-rollers to take upvany length of ICO IIO

web, and when used in a webprinting press different lengths by silnplyregulating the s :El

speed of the feeding and delivering rollers. As

applied to web-machines generallythe extent change exactly in accordance with the extentof rotation of the Web-roll during the time the of Ymovement of the looping-rollers, relative of the gear R (or V) and the Web-roll; but

when once determinedthe proportionate speeds of movement of thelooping-rollers and feed-rolls remains unchanged, and when the speed of the Web-rolls is changedthe extentl of movement of the looping-rollerswill also gear R (or V) is caused to positively operate the looping-frame. Y

Having thus described my invention, what I therefore'clam as new, and desire to secure by Letters Patent thereon, is-

1. The combination of a continuously-operating 'Web-forwarding roll, a Web-looper, and'mechanism for intermittently actuating the looper during a part of the revolution of said roll, said mechanism being adapted to move the looper at a predetermined speed al- Ways uniformly proportionateA to the peripheral speed of said roll, substantially as described.

2. y The combination of a web-actuatin g roll, means for changing the speed of the Web-roll, a web-looper, a gear for operating said looper, and mechanism for causing the gear to intermittently move the looper, during a part otV the revolution of the roll, at a predetermined speed proportionate to' the peripheral speed `ot the said roll, substantially ask described.

3. The combination' of the Web-feed Lroll driven at an uniform speed, means for chang` ing the speed of said roll, a looping-frame,

' a gear for operating said looping-frame actuated from and driven uniformly with relation to said Web4roll, and. mechanism for causing the gear to move the frame'during a'predetermined partof the revolution ot the web-roll, and at a rate of` movement proportionate to the peripheral speed of the Web-roll, sub'stan--' tially as described. n

4. The combination of a continuously# driven Web-roll, a gear actuatedY thereby, a looper-frame adapted to be intermittently moved by said gear, and an uniformly-driven cam andmechanism controlled by the cam for causing the gear to actu ate the frame during a predetermined part'of thev revolution of y the cam, substantially as described.

5. The combination of atvebefeed roll and means for varying the speed thereof, a gear adapted to be driven uniformly with the feedroll, a Web-looping frame adapted to be inter-4 mittently operated by said gear, andan uniformly-operating cam and mechanism con trolled by said cam adapted to cause the gear to actuate the frame during apredetermined part of the revolution of the cam, substan-4 tially as' described.

6. The combination of an uniformly-d riven and continuously-operatingweb-roll, a gear adapted to be driven uniformly with relation to'sa'id roll a loopinglroller frame, `and a bar thereon adapted to be actuated by said gear;

with means forA causing said gear to actuate said-bar during some partof the revolution of the roll, substantially as described.

7. The '1 combination of a continuouslydriven Web-roll, means for varying its speed, a gear on theshaft thereof; vand a loopingframe adapted to be operated one Way by said gear; with a continuously and uniformly `driven cannand mechanism, controlled by f said cam, whereby said 'gearfis caused to move the loopinglframe during V'a predetermined part of the revolution of the cam,substantially as described.

8. The combinationot' a Web-feed roll, a l

gear operated therewith, a looping-roller, a reciprocating frame carrying said'roller, and a bar attached to said'frameand engaging said gear; with means forcausing said gear to intermittently operate the bar, and'fmeans for returning said frame to its original position When'permitted by the gear; substantially as described.

9. The comb ination ofthe changeable-speedV Web-rolls, a gear'adapted to be operated intermittently and uniformly Witlr the rolls; anda looping-frame adapted tobe operated by sai'd gear; with a cam, andi-mechanism operated thereby, whereby said gear is caused to actuate theV looping-frame, during a part of the revolution of the cam,'andirrespective of the speed of theAfeed-rolls, substantially as and for the purpose'described. i

10. The combination of a changeable-speed Web-feeding"roll, a gear operated therefrom,

an uniformly-driven cam, a looping-frameV adapted to be'intermittently operated 'by said gear, and means controlled by said cani whereby the gear is 'caused' to actuate the frame during part of the revolution of the cam, substantially as described.

` ll. `The combination of continuously and synchronously drivenweb feed and delivery rolls, a gear on one roll-shaft, ya pair of uniformly-driven cutting-cylinders, acam on one cylinder-shaft, a frame carrying Webdooping rollers,- and an arm on said frame adapted to engage said gear; with mechanism'controlled 'bythe saidcam, adapted to cause the gear to ICQ operate the frame during a predetermined part of the revolution of the cutting-cylinders,

iand means for varying the speed of the feedrolls, substantially as described.

, l2. The combination of a continuously-operating web-feed roll, a vgear actuated there# by and adapted to be driven uniformly there- With, a frame carrying a looping-roller, a bar` connected to saidfframe and engaging said gear, and means' forl causing said gear to intermittently operate the bar, substantially as described.

13. The combination of aWeb-fe'eding roll, a loose gear on the shaft'thereonja frame carrying a Web-loopel, adapted to be" operated by said gear, and meansfor causing said gear to 'rotate 'with the roll, substantially as described;

` a rack-bar attached to said frame engaging said gear, substantially as described.

16. The combination of aWeb-roll, a gear on the shaft thereof, means for locking said gear to said roll during some part of the revolution thereof, a looping-frame, and a bar attached to said frame engaging said gear; with means for'returning said frame to its original position when the gear is released from lthe roll, substantially as described.

- 17. The combination of a changeable-speed web-feeding roll, a gear on the shaft thereof, an uniformly-rotated cam, means controlled by the cam forlocking said gear to the roll during some part of the revolution thereof, a looping-roller, a reciprocating frame guiding said roller, and a rack-bar attached to said frame and meshing with said gear; and means for returning said frame to its original When the gearis released from the roll, substantially as described.

18. The combination of continuously and synchronously rotating Web-feeding rolls; a gear on one roll-shaft, uniformly-rotating cutting-cylinders, a cam on the shaft of one cutting-cylinder, a looping-frame adapted to be operated by the gear on the roll-shaft, and mechanism controlled by the cam on the cutting-cylinder shaft, for causing said gear to actuate said frame during a predetermined part of the revolution of the cutting-cylinders, substantially as described.

19. The combination of the continuouslydriven Web-roll, means for varying the speed thereof, and a gear on the shaft thereof; a continuously and uniformly driven cuttingcylinder, a cam on the shaft thereof, and a looping-frame having a bar adapted to engage said gear; with mechanism, controlled by said cam, whereby said gear and bar are caused to move the looping-frame during a predetermined part of the revolution of the cutting-cylinder, substantially as described.

20. The combination of the continuously and synchronously driven feed-rolls, a gear on one roll-shaft, means for varying the speed of said rolls; continuously and uniformly driven cutting-cylinders, and a cam on one cylinder-shaft; With a looping-frame, a bar thereon adapted to engage said gear, and mechanism substantially as described controlled by said cam, whereby said gear and arm intermittently move the looping-frame during a predetermined part of the revolution of the cutting-cylinders, irrespective of the speed of the feed-rolls, substantially as described. Y

21. The combination .of the changeablespeed Web-rolls, a loose gear on the shaft of one of the rolls, a clutchfor locking said gear to said roll, a lever for operating said. clutch, and an uniformly-rotating cam for operating said clutch-lever; with a looping-frame, a bar attached thereto'engaging said gear, and means for returning said looping-frame to normal positionwhen said gear is released from the roll, substantially as described.

22. The combination of the web-rolls, the cutting-cylinders,a gear on one web-roll shaft, a clutch for locking said gear to said roll, a lever for operating said clutch; anda cam on one cutting-roll shaft for operating said lever; with a looping-frame adapted to be operated by said gear, and means for returning said looping-frame to normal position when said gear is released from the roll, substantially as described.

23. The combination of variable-speed webrolls,and uniformly-driven cu tting-cylinders, a gear on the shaft of one of the web-rolls, a clutch for locking said gear to said roll, a lever for operating said clutch, and a cam on one cutting-roll shaft for operating said lever; with a looping-frame anda bar attached thereto meshing with said gear, and means for returning said looping-frame to normal position when said gear is released from the roll, substantially as described.

24. The combination of the synchronouslydriven Web feed and delivery rolls, means for varying the speed of said rolls, the uniformlydriven cutting-cylinders, a gear on the shaft of one of the delivery-rolls, a clutch for locking said gear to said roll, a lever for operating said clutch, and a cam, on one cuttingroll shaft, for operating said lever; with a looping-frame, a rack-bar attached thereto and meshing with sai'd gear, and means for returning said looping-frame to normal position When said gear is released from the roll, substantially as described.

25. The'combination of a Web-feed roll and means for varying the speed thereof, a gear adapted to be driven uniformly with the feedroll, a Web-looping frame adapted to be intermittently operated by said gear, and mechanism adapted to cause the gear to actuate the frame during a predetermined part of the revolution of the feed-roll, substantially as described.

26. The combination of a continuouslydriven Web-roll, means for varying its speed, a gear adapted to be operated therewith; and a looping-frame adapted to be operated one Way by said gear; with a cam, and mechanism, controlled by said cam, whereby said gear is caused to move the looping-frame during a predetermined part of the revolution of the cam, substantially as described.

27. The combination of continuously-driven Web feed and delivery rolls, a gear adapted to be opertted therewith, a pair of cutting-cyl- IOO IIO

inders, a camyand a frame carrying a Weblooping roller and adapted to engage said gear; with mechanism controlled by the said cam, adapted to cause the' gear to operate the frame during a predetermined part of the revoluton ofthe cutting-cylinders, substantially as described.

28. The combination of a chan geable-speed web-feeding roll, a gear driven therefrom7 a cam, means controlled by the cam for driving said gear from the roll during some part of the revolution thereof, a looping-roller, a reciprocating frame guiding said roller, adaptedto be operated by said gear; and means for returning said frame to its original position when the gear is released from the roll, substantially as described.

29. The combination of continuously and synchronously rotating Web-feeding rolls; a gear driven from said rolls, uniformly-rotating cutting-cylinders, a cam, a looping-frame adapted to be operated -by said gear, and

Amechanism controlled by the cam Jfor causing said gear to actua-te said frame during a predetermined part of the revolution of the cutting-cylinders, substantially as described.

30. The combination of the continuouslydriven Web-roll, means for varying the speed beoperatedby said gear, and mechanisnr substantially as described, whereby saidv gear is caused vto intermittently move the loopingframe during a predeterminedpart ofthe revolution of the cutting-cylinders, irrespective of the speed of the feed-rolls, substantially as described.

In testimony that I clairnthe foregoing as my own I affix my signature inr presence of two Witnesses.v

ARTHUR E. DOWELL.

Y In presence of JAMES RMANSEIELD, T. H. ALEXANDER.; 

